1275012775250 has 16 divisors (see below), whose sum is σ = 2386823915736. Its totient is φ = 510005110000.

The previous prime is 1275012775237. The next prime is 1275012775259. The reversal of 1275012775250 is 525772105721.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 539591615761 + 735421159489 = 734569^2 + 857567^2 .

It is not an unprimeable number, because it can be changed into a prime (1275012775259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2550025301 + ... + 2550025800.

Almost surely, 2^{1275012775250} is an apocalyptic number.

1275012775250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1275012775250 is a deficient number, since it is larger than the sum of its proper divisors (1111811140486).

1275012775250 is an equidigital number, since it uses as much as digits as its factorization.

1275012775250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5100051118 (or 5100051108 counting only the distinct ones).

The product of its (nonzero) digits is 343000, while the sum is 44.

The spelling of 1275012775250 in words is "one trillion, two hundred seventy-five billion, twelve million, seven hundred seventy-five thousand, two hundred fifty".